Winter to winter recurrence of atmospheric circulation anomalies over East Asia and its impact on winter surface air temperature anomaliesReport as inadecuate




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The persistence of atmospheric circulation anomalies over East Asia shows a winter to winter recurrence WTWR phenomenon. Seasonal variations in sea level pressure anomalies and surface wind anomalies display significantly different characteristics between WTWR and non-WTWR years. The WTWR years are characterized by the recurrence of both a strong weak anomalous Siberian High and an East Asian winter monsoon over two successive winters without persistence through the intervening summer. However, anomalies during the non-WTWR years have the opposite sign between the current and ensuing winters. The WTWR of circulation anomalies contributes to that of surface air temperature anomalies SATAs, which is useful information for improving seasonal and interannual climate predictions over East Asia and China. In the positive negative WTWR years, SATAs are cooler warmer over East Asia in two successive winters, but the signs of the SATAs are opposite in the preceding and subsequent winters during the non-WTWR years.



Author: Xia Zhao , Guang Yang

Source: http://plos.srce.hr/



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